Rhodopeptins, Novel Cyclic Tetrapeptides with Antifungal Activities from Rhodococcus sp. II. Structure Elucidation.
作者:HIROYUKI CHIBA、HITOSI AGEMATU、KAZUYUKI DOBASHI、TAKEO YOSHIOKA
DOI:10.7164/antibiotics.52.700
日期:——
The structures of rhodopeptins, novel antifungal peptides, were determined on the basis of physico-chemical analyses of the intact molecules and their acid hydrolysates. The structures of rhodopeptins Cl, C2, C3, C4 and B5 were determined to be cyclo (-Gly-L-Orn-L-Val-3-amino-10-methyldodecanoyl-), cyclo (-Gly-L-Orn-L-Ile-3-amino-10-methyldodecanoyl-), cyclo (-Gly-L-Orn-L-Val-3-amino-12-methyltridecanoyl-), cyclo (-Gly-L-Orn-L-Val-3 -amino-12-methyltetradecanoyl-) and cyclo (-Gly-L-Lys-L-Val-3-amino-13-methyltetradecanoyl-), respectively. They are novel cyclic tetrapeptides containing a lipophilic β-amino acid.
根据对完整分子及其酸水解物的物理化学分析,确定了新型抗真菌肽--荷多肽的结构。经测定,根瘤肽 Cl、C2、C3、C4 和 B5 的结构为环状(-Gly-L-Orn-L-Val-3-amino-10-methyldodecanoyl-)、环状(-Gly-L-Orn-L-Ile-3-amino-10-methyldodecanoyl-)、环状(-Gly-L-Orn-L-Ile-3-amino-10-methyldodecanoyl-)和环状(-Gly-L-Orn-L-Val-3-amino-10-methyldodecanoyl-)、分别是 cyclo (-Gly-L-Orn-L-Val-3-amino-12-methyltridecanoyl-), cyclo (-Gly-L-Orn-L-Val-3-amino-12-methyltetradecanoyl-) 和 cyclo (-Gly-L-Lys-L-Val-3-amino-13-methyltetradecanoyl-)。它们是含有亲脂性β-氨基酸的新型环状四肽。